I don't quite understand what you are trying to say... You want to buy a wireless router with bandwidth control function? TL-WA701ND is not a router but an access point.

Wow...if so, you don't need to upgrade the router as the firmware is the latest already. Any problem with your internet connection?

Did you try to update the driver manually? http://www.tp-link.com/en/faq-228.html Try chipmaker's drvier(AR9271). https://www.atheros.cz/atheros-wireless-drivers.html

Try the driver for Windows 8. No need to open any of them. Follow the guide below to install the driver. http://www.tp-link.com/en/faq-451.html

Do you know how to login your router's configuration page? You should be able to find Channel option and you can modify it. To try static IP, you can check IP address, default gateway, DNS on the...

Did you get a chance to input Wi-Fi password? What's the operating system of your PC and how do you secure the Wi-Fi network? You may try to change a channel on the router and reconnect. Also, in...